you need to hang seven pictures in a straight line a.) in how many ways can this be accomplished? b.) if the picture of your great grandfather must be in the middle, how many ways can this be hung?
Accepted Solution
A:
I'm just going to answer part A because I don't know part B. part a.) 7*6*5*4*3*2*1=5040 so there are 5040 different ways this can be accomplished